# A level maths question

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Thread starter 1 month ago
#1
How do I work out part a?
Last edited by ExamSeason12; 1 month ago
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1 month ago
#2
(Original post by ExamSeason12)
How do I work out part a?
Well, what technique would you normally use to find the coordinates of a maximum point?
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Thread starter 1 month ago
#3
(Original post by davros)
Well, what technique would you normally use to find the coordinates of a maximum point?
derivative
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Thread starter 1 month ago
#4
(Original post by ExamSeason12)
derivative
but I don't know how to start it?
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1 month ago
#5
(Original post by ExamSeason12)
but I don't know how to start it?
x and y are defined by parametric equations in terms of a third variable t.

Have you not covered how to do differentiation of parametric functions? This should be covered in your textbook / classwork before you attempt a question like this

For info, the "obvious" result is true - dy/dx = (dy/dt) / (dx/dt) even though the derivatives are not strictly fractions. But as I say above, you really should have covered some worked examples with parametric functions before attempting this
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1 month ago
#6
Have a look at your parametric differentiation!

Edit: Nvm, sorry, didn't see someone had replied
Last edited by xOutcast; 1 month ago
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Thread starter 1 month ago
#7
(Original post by xOutcast)
Have a look at your parametric differentiation!

Edit: Nvm, sorry, didn't see someone had replied
ok
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1 month ago
#8
(Original post by xOutcast)
Have a look at your parametric differentiation!

Edit: Nvm, sorry, didn't see someone had replied
That's no problem - I type so slowly these days I usually find 2 people have replied while I'm composing a response
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